The main controller gets all its instructions from an EEPROM that is fitted onboard the main controller PCB, if there is an error reading this software then you will see this error appear.
It is worth noting that this is uncommon and to damage the EEPROM permanently as it is hard coded. We often comment that two things can alter a washing machine's program software, physical damage to the chip or board and an electro-magnetic pulse, which is highly unlikely. These software instructions are designed to remain unchanged and cannot be altered without some form of interference normally. In other words, the problem has been caused by something outside of the washing machine.